DOI: 10.1175/JCLI-D-12-00575.1
Scopus记录号: 2-s2.0-84876438721
论文题名: Cloud and water vapor feedbacks to the El Niño warming: Are they still biased in CMIP5 models?
作者: Chen L. ; Yu Dr. Y. ; Sun D.-Z.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 14 起始页码: 4947
结束页码: 4961
语种: 英语
Scopus关键词: Cloud radiative forcing
; Coupled Model Intercomparison Project
; Individual skills
; Large-scale circulation
; Model simulation
; Ocean-atmosphere
; Radiative forcings
; Water vapor feedbacks
; Atmospheric radiation
; Climate models
; Feedback
; Greenhouse effect
; Precipitation (meteorology)
; Water vapor
; Computer simulation
; climate change
; climate feedback
; climate modeling
; cloud cover
; cloud radiative forcing
; computer simulation
; El Nino
; warming
; water vapor
英文摘要: Previous evaluations of model simulations of the cloud and water vapor feedbacks in response to El Niño warming have singled out two common biases in models from phase 3 of the Coupled Model Intercomparison Project (CMIP3): an underestimate of the negative feedback from the shortwave cloud radiative forcing (SWCRF) and an overestimate of the positive feedback from the greenhouse effect of water vapor. Here, the authors check whether these two biases are alleviated in the CMIP5 models. While encouraging improvements are found, particularly in the simulation of the negative SWCRF feedback, the biases in the simulation of these two feedbacks remain prevalent and significant. It is shown that bias in the SWCRF feedback correlates well with biases in the corresponding feedbacks from precipitation, large-scale circulation, and longwave radiative forcing of clouds (LWCRF). By dividing CMIP5 models into two categories-high score models (HSM) and low score models (LSM)-based on their individual skills of simulating the SWCRF feedback, the authors further find that ocean-atmosphere coupling generally lowers the score of the simulated feedbacks of water vapor and clouds but that the LSM is more affected by the coupling than the HSM. They also find that the SWCRF feedback is simulated better in the models that have a more realistic zonal extent of the equatorial cold tongue, suggesting that the continuing existence of an excessive cold tongue is a key factor behind the persistence of the feedback biases in models. ©2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51796
Appears in Collections: 气候变化事实与影响
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作者单位: LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Cooperative Institute for Research in Environmental Studies, University of Colorado, NOAA/Earth System Research Laboratory, Boulder, CO, United States
Recommended Citation:
Chen L.,Yu Dr. Y.,Sun D.-Z.. Cloud and water vapor feedbacks to the El Niño warming: Are they still biased in CMIP5 models?[J]. Journal of Climate,2013-01-01,26(14)